FPV and Multicopter

need a ginny pig to test fit this session mount i designed with fusion360 for the smooth operator while im waiting for tpu filament in the mail.

Just purchased a Sprint UL 5mm arm frame from Crown City FPV and looking for parts for it. Here's the frame link.
https://crowncityfpv.com/product/5-sprint-ultralight-race-frame/

I recently got my first 3D printer and wanted to make a drone. I have a Monoprice select mini, so the build space is limited. I was wondering if anyone has or knows of an easy drone to construct and fly for a cheap price. I am also knew to building drones but I can learn quickly. Also it would be great if it could have FPV capabilities.

This article was excellent. It's a pity if you didn't read it. http://prsync.com/kynix-semiconductor-hongkong-limited/whats-the-design-part-and-composition-in-small-uav-flight-control-system-1022768/

Hi guys:-)
I want to try and design camera mounts and other stuff for my fleet of fixed wing FPV planes. My only experience in 3D design is from using Sketchup. What sort of easy to use 3D design program would you guys recommend I try?
Any advice would be apppreciated